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The tibial nerve, which travels down the posterior compartment of the leg into the foot; The common fibular nerve (also called the common peroneal nerve), which travels down the anterior and lateral compartments of the leg into the foot; The sciatic nerve is the largest nerve in the human body. [2]: 422–4 [3] [4] 3D still showing Sciatica.
The sciatic nerve is the largest peripheral nerve in the body and innervates significant portions of the skin and muscles of the thigh, leg, and foot. The sciatic nerve originates from spinal nerves L4-S3. It forms in the pelvis from nerves of the sacral plexus, and exits the greater sciatic foramen just underneath the piriformis.
The sciatic nerve comprises nerve roots L4, L5, S1, S2, and S3 in the spine. [26] These nerve roots merge in the pelvic cavity to form the sacral plexus and the sciatic nerve branches from that. Sciatica symptoms can occur when there is pathology anywhere along the course of these nerves. [27]
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Piriformis syndrome occurs when the piriformis irritates the sciatic nerve, which comes into the gluteal region beneath the muscle, causing pain in the buttocks and referred pain along the sciatic nerve. [8] This referred pain is known as sciatica. Seventeen percent of the population has their sciatic nerve coursing through the piriformis muscle.
The symptoms (and their severity) experienced by women with PGP vary, but include: Present swelling and/or inflammation over joint. Difficulty lifting leg. Pain pulling legs apart. Inability to stand on one leg. Inability to transfer weight through pelvis and legs. Pain in hips and/or restriction of hip movement. Transferred nerve pain down leg.
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